BESTSUN 3 Pack Red Light Flashlights, 300 Lumens 3-Mode Mini Black Shell Portable Red LED Tactical Flashlight Torch Adjustable Focus Zoom Lamp for Hunting, Astronomy Night Vision, Night Observation Flashlight red light is specially designed for astronomy enthusiast, It's a nice night-time astronomy accessory, illuminates nicely while preserving night vision. Human's eyes are sensitive to the red range of light, but animals are not, so this bright Red LED flashlight is great tool for hunting. High power 3 mode red LED flashlight: 3 switch modes(hihg/low/sos), 3 modes 300 lumen LED flashlight red light, scalable LED red light for more than 150 yard red light beam. Designed to mount on certain hand pistols, rifles or shotguns with mounting equipment, for sending signal, for asking help for warnings with red light. Battery Configuration:1xAA battery Or 1x14500 battery (battery is not included)